sync - it allows users to synchronize cache data to permanent system memory

to save important files and prevent data loss.

To synchronize all cached data for the current user to the permanent memory

$ sync 

To sync all mounted file systems 

$ sudo sync

To sync Specific files

$ sync ./file1 ./file2

To sync file1 from home and file3 from /opt

$ sync ./file1 /opt/file3

To sync file data only

$ sync -d ./file1 ./file2 ./file3

To sync a directory

$ sync ./test_dir

To sync a file system linked to a specific file

$ sync -f test_file1

$ To view help options

$ sync --help

regards,

T.Dhanasekar